Subtract 1/28 from 20/27
20/27 - 1/28 is 533/756.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 28 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 27 × 28 = 756,
20/27 = 20 × 28/27 × 28 = 560/756 - Likewise, for the 2nd fraction, since 28 × 27 = 756,
1/28 = 1 × 27/28 × 27 = 27/756 - Subtract the two like fractions:
560/756 - 27/756 = 560 - 27/756 = 533/756
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